Having said so much, Peter Slade seemed more inclined to talk, one
reason being that he wanted to get at the bottom of the mystery which
had brought Tad Sobber and his uncle to that part of the globe. Tad
had hinted of great wealth, and of getting the best of the Rovers and
some other people, but had not gone into any details.

Peter said he had come to Nassau to join his mother, who was stopping
there for her health. His father was coming on later, and then the
family was going across the ocean.

"I know there is something up between your crowd and the Merrick
crowd," said the youth. "You are both after something, ain't you?"

A little more conversation followed, and then the Rover boys asked
Slade where he was going to stop, and said they might see him later.

"This is mighty interesting," remarked Tom, as he and his brother
hurried to their hotel. "We must tell father of this without delay."

But Mr. Rover could not be found until that evening, when the party
came back from the visit to the flower gardens. He listened with deep
interest to what was said, and then went off on a hunt for Sid Merrick
and the tramp steamer Josephine without delay.

Nothing was discovered that night, but a little before noon of the day
following they learned that a tramp steamer had appeared in the
harbor, taken several persons on board, and then steamed away again.

"Can you tell me the name of that craft?" asked Anderson Rover of the
man who gave him this information.

Mr. Rover knew that Doranez was very dark, and he rightfully surmised
that the party had been made up of Merrick, Tad, Doranez, Cuffer and
Shelley.

"This is certainly a serious turn of affairs," said he to his sons.
"While we have been losing time in Philadelphia and elsewhere, Sid
Merrick has gone to work, gotten somebody to let him have this tramp
steamer, and now, in company with Doranez, is off to locate Treasure
Isle and the treasure. It looks to me as if it might be a race between
us after all."

"Yes, and the worst of it is that we are laid up for repairs," said
Dick, with almost a groan in his voice.

"How long must we remain here?" asked Sam "Can't they hurry the job
somehow?"

The suggestion to offer more money was carried out, and the ship
builders promised to have the Rainbow fit for sailing by the following
afternoon. The paint on the new work would not be dry, but that would
not matter.

On the morning of the day they were to sail a man applied to Captain
Barforth for a position. He said he had been a fireman on an ocean
liner, but had lost three fingers in some machinery and been
discharged.

The captain was kind hearted, and as the Rainbow could use another
deck hand he told the man to bring his luggage aboard, which the
fellow did. The newcomer's name was Walt Wingate, and he did his best
to make friends with everybody on board. He had a low, musical voice,
and was frequently whistling popular airs.

"He's an odd one," said Dick, after noticing the new deck hand several
times. "He seems real nice and yet--"

"Well, he hasn't anything to do with us. If he's a good man I'm glad
the captain gave him a job. It's tough luck to lose your fingers,
especially if you must work for a living."

By five o'clock the steam yacht had left the harbor of Nassau and was
standing out to sea once more. The course was again southward, around
the western extremity of Cuba. During the following days they passed
numerous islands and keys, as they are called, but generally at such a
distance that the shores could be seen but faintly.

To make sure of what he was doing, Anderson Rover held several
consultations with Captain Barforth, and Bahama Bill was closely
questioned regarding the location of Treasure Isle. The old tar stuck
to the story he had told so often, and went over numerous maps with
the commander of the steam yacht.

"He has the location pretty well fixed in his head unless the whole
thing is a fairy tale," was Captain Barforth's comment.

While one of these talks was going on, Dick, who was on deck, chanced
to go below in a hurry. As he passed down the companionway he
encountered Walt Wingate, who had been listening at the cabin doorway.

"Hullo, what do you want?" demanded Dick, for the man's face had a
guilty look on it.

"Why--er--my handkerchief blew down here and I came down to get
it," answered the new deck hand, and pointed to the cloth in question
sticking out of his pocket.

"That's all, sir," answered Wingate, and touching his cap he slouched
off. Then he turned back. "Sorry if I disturbed anybody," he added.

"Oh, I suppose it is all right," returned Dick, but he was by no means
satisfied, although he could not tell exactly why. There was something
about the new deck hand that did not "ring true." At first he thought
to speak to his parent about the occurrence, but then concluded not to
worry his father.

Knowing that it was now a race between the Rainbow and the Josephine
for Treasure Isle, Captain Barforth crowded on all steam. The course
of the steam yacht was fairly well laid out, but it contained many
turns and twists, due to the many keys--located in these waters.

"We don't want to run on any hidden reef," said the master of the
vessel. "If we do we may go down or be laid up for a long while for
repairs. These waters are fairly well charted, but there is still a
great deal to be learned about them. From time to time they have had
earthquakes down here, and volcano eruptions, and the bottom is
constantly shifting."

On the second night out from Nassau, Sam, for some reason, could not
sleep. He tumbled and tossed in his berth for two hours, and then,
feeling that some fresh air might do him good, dressed in part and
went on deck.

It was not a very clear night, and but few stars shone in the
firmament. In the darkness the lad walked first to one side of the
steam yacht and then to the other. Then he strolled toward the bow, to
have a little chat with the lookout.

As he walked along the side of the cabin he became aware of a figure
leaning over the rail, gazing far down into the sea. By the man's
general form he made the fellow out to be Walt Wingate. The deck hand
had hold of something, although what it was Sam could not tell.

At first the youngest Rover was going to call to the man and ask him
what he was doing. But he remained silent, and stepped into the shadow
of the cabin as Wingate left the rail and crossed to the other side of
the yacht. From under some coils of rope the deck hand brought forth
something, lifted it over the rail and dropped it gently into the sea.
Then he leaned far over the rail as before, and this lasted two or
three minutes.

"He is certainly up to something out of the ordinary," thought Sam. "I
wonder if he is fishing? If he is, it seems to me it is a queer way to
go at it."

As Wingate left the rail he walked directly to where the boy stood.
When he discovered Sam he started back as if confronted by a ghost.

"I thought I might get one, but they are all gone now," answered
Wingate, and slouched off, whistling in that peculiar manner of his.

Sam walked slowly to the bow. As he did this, Wingate turned to look
at him in a speculative way.

"Wonder if the young fool saw what I was up to?" he muttered. "If he
did I'd better go slow. I don't want to get caught. They might treat
me pretty roughly."

The watch on deck was changed and Wingate went below. Asa Carey was in
command of the yacht and he, too, wanted to know why Sam was up at
such a late hour. The boy told him, but said nothing to the mate of
Wingate's strange actions.

"That wire has no business there," he declared. "I don't know how it
came there."

"I can tell you how it got there, and I guess you'll find something
like it on the other side," answered Sam, and told what he had seen
Wingate do during the night.

"Humph, I'll investigate this," muttered the captain, and went off for
a boathook. When he returned he caught the hook into the loop of the
wire and tried to bring the end of the strand to the deck. He was
unable to do it alone and had to get the boys to aid him. Then all
three ran the wire around a brace and gradually hauled it aboard. At
the end was an iron chain, fastened into several loops, and also the
anchor to one of the rowboats.